Sheet-metal culvert-pipe.



. KLOTZL SHEET METAL GULVERT PIPE. APPLICATION FILED APR. 27, 1908.

2 SHEETS-SHEET 1.

Patented Sept. 21, 1909.

IN VEN TOR & u n w A TTORN E Y wiLLIAM' N. KLOTZ, or canteen, ems, assIeNoR TO THE CANTON CULVEBT COM- PANY, or can'ron, cure, a cease-mama or time.

SHEET-METAL CULVEJRT-PIPE.

Sptiflciitidfi of Letters Patent.

To all whom 'it may concern:

Be it known that I, WILLIAM N. Know, a citizen of the United States, residing at Cam ton, in the county of Stark and State of Ohio, have invented a new and useful Improvement in Sheet-Metal Culvert-Pipes, of which the followingis a specification.

The invention relates to a culvert pipe made of sheet metal, preferably galvanized sheet iron or steel, and having annular strengthening corrugations. Such pipes are generally made with the corrugations extending entirely around thepipe, and the transverse ridges formed by the corrugations in the bottom of the pipe, prevent a free flow or a scouring action of the water therein, and interfere with the passing of leaves and other detritus, which thus accumulate and are deposited in the intervening grooves.

The object of the invention is to form such a pipe with a smooth bottom, and to make the same in" sections which can be nested into small space for shipment and readily assembled and fastened together at the place of use. These objects are attained by making the pipe of one or more smooth bottom sections and one or more annularly corrugated top sections, and to shapethe edge portions of one section so that they will overlap and fit the abutting edge portions of the other section;

A further purpose of the invention is to strengthen the joined edge portions of the two sections by fla'nging' one edge portion to form an angle into which the other edge por- -tion. is abutted.

cover and seal the joined overlapping edge The invention furthermore pertains to the use, when desired, of a layer of concrete or other cementitious material in the bottom of the pipe, the same" being arranged'to portions of the two sections, thereby making an absolutely water-tight pipe.

These general objects and other minoriadvantages are attained by the construction and arrangement illustrated in the accompzilnylilng drawings, forming part hereof, in w m a Figure 1- is a cross section of a pipe 'fi'iade' with a-flat bottom section anfd a SYnl-cil'Clf-f possibly be separated. It will be noted that the'crimping and flanging of the edges of lar annularly. corrugated top section, the

edge portions ofthe bottom section being crimped and flanged to overlap and fit the longitudinal section on line 22, Fig, 1 Fig. 3, cross section of a pipe made with a trans ersely curved smooth bottom section and a horseshoe-shaped annularly corrugated top section, the edge portions of the bottom section being crimped and flanged to overlap and fit the edge portions of the top section; Fig. 4, a fragmentary section of the bottom portion of a similar pipe in which the edge portions of the bottom section are flanged, and the edge portions of the top section are flattened to fit the flanges and abut in the angle of the bottom section; Fig. 5, a cross section ofa pipe having a transversely curved smooth bottom section and an ovalshaped annula'rly corrugated top section, the edge portions of the bottom section being crimped to fit the edge portions of the top raeen eea Sept. 21, 1909.

section; Fig. 6, a fragmentary section of the I bottom portion of a similar pipe,'with the edge portions of the upper section. flattened to fit the edge portions of the lower section; and Fig. 7, a fragmentary plan section on line 77, Figs. 1 and 2.

Similar numerals refer to similar parts throughout the drawings.

The form of ipe illustrated in Figs. '1, 2

and 7, is well a apted for use on unyielding foundations, and is composed of the flat bottom sections 1, and as shown, with the'semicircular annularly corrugated top sections 2; The edge portions 3 of the bottom sections are flanged upward, and are also crimped throughout their whole width to conform to the corrugations of the top section,.the edge portions 4 of which are abutted'into' the angle*5' formed by the flanged edge portions of the bottom section; and the sldes of the similarly shaped edge portions of the re-. spective sections are nested together. overlappingb edge portions may be fastened together as y means of the bolts 6, the heads of which are preferably located in the internal grooves of the corrugations, but it is evident that when a pipe of this construction is, embedded in the ground, the fastening of the edge portions together can be dispensed with for the reason that the thrust action of the arched upper section will hold its edges securely in the flanged angles of the lower section, andthe sections cannot the lower section greatly strengthen the same, and that a rigid base is thus furnished The for the support of the legs pf the arch of the top section. Y

The form of pipe illustrated in Figs. 3 and 4, is adapted for use on a foundation which although somewhat yielding, is not soft, and is composed of a smooth bottom section 1,

, slightly curved transversely, and an annularly corrugated horseshoe-shaped top section2'? In Fig. 3, the edge portions 3 of the bottom section are flanged upward and crimped to fit the edge portions .4 of the top section, which are abutted in the angle 5 formed by the flanged edge portions of the bottom section; while in Fig. 4, the edge portions 7 of the bottom section are flanged upward, and the edge portions 8 of the top section are flattened to fit the whole width of the overlapping edge portions of the bottom section, and are abutted in the angle 9 formed by the, flanges thereof. The overlapping edge portions may .be fastened as by the bolts 64. In both figures, a layer of concrete, 10 and 10, is shown extending entirely across the bottom section and also covering the edges of the top section so that the edge joints are sealed and a water-tight pipe is formed. *It will be noted that by I the concrete reason of the smoothness of the bottom section, the layer of concrete is of uniform thickness and strength throughout, and that will not onl stiflz'en and stren then the arch section 0 the bottom of the plpe, but will protect the same against the abrasion of flowing water and detritus. It will be understood; however, that theuse of the concrete lining in the bottom of the pipe is not essential to the other features of the invention.

. The form of pipe illustrated in Figs. 5 and 6 is well adapted .for use on soft foundations, and as shown, the bottom section 1" is formed smooth .but considerably curvedj transversely, and the annularly corrugated of construction, it is tions 4 of the top section, but are not top section 2? is oval shape in form, In Fig. 5, the edgel ortions 3 of the bottom section; are crimpe to fit the overlapping edge poranged to form an angle for the same. In this form practically necessary that the overlapping e ge portionsshall be fastened together as by the bolts 6*. I In Fig.

6, the edge port-ions of the bottom section are not crimped, but the overlapping edge portions of the top section are flattened to fit the edge portions of the bottom section.-

The pipe is readily made up of one or more relatively long bottom sections, the end edge portions of which are preferably overlapped and bolted together as shown at 11 in Fig. 2, upon which are placed a series of- -rela tive'ly short top sections, the end corrugations of'which are readily overlapped section and an annularly-corrugated opposite section with overlapping edge portions, the edge portions of one section being shaped to fit the whole width of the overlapping .edge portions of the other section, with means for fastening the edge portions together.

' 3. A sheet-metal pipe including a smooth section and an annularly-corrugated;oppo:

the edge portions-of the smooth section being crimped to fit the whole. width of the overlapping edge portions of the opposite section. v

4. A sheet-metal 'pipe including asmooth section and an annularly-corrugated oppoing crimped to fit the whole width of the overlapping edge portions of the opposite section, with means for fastening the edge portions together. v

site section with overlapping edge ortions having their whole width shaped alike and the edge portions of one section being flanged to form an angle into which the edge portions of the other section are abutted 6. A sheet-metal pipe including a smooth site section with overlapping e having their whole width shape a ike and the edge ortions, of one section .being flan ed to cm an angle into which the edge portions of the other ction are abutted, with means for fastenifi, the edge portions together.

7. culvert'pip'e including sheet metal bottom and top sections joined together at the edges and a layer of cementitious ma;

' edger joints.

Witnesses MARY A. CAVANAUGH, RUTH A.- MILLER.

terial on the bottom section and sealing the WILLIAM N. KLOTZ. 5 I

2. A sheet-metal pipe including a smooth site section with overlapping edge portions,

site section with overlapping edge portions, the edge portions of the smooth section be-- 5. A sheet-metal pipe including a smooth I 58011011 and an annularly-corrugated opposection and an annularly-corrugated oppoe ortions 

